diff --git a/index.html b/index.html
index 24207853..4c14aa84 100644
--- a/index.html
+++ b/index.html
@@ -1 +1 @@
-<!DOCTYPE html><html lang=""><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1,maximum-scale=1,minimum-scale=1"><link rel="icon" href="./dist/logo.png"><title>一个简单的web思维导图实现</title><link href="dist/js/chunk-2d0a3179.d9ba171a.js" rel="prefetch"><link href="dist/js/chunk-2d0a514a.9b7a3240.js" rel="prefetch"><link href="dist/js/chunk-2d0aa579.5eb94d61.js" rel="prefetch"><link href="dist/js/chunk-2d0aa978.29ca76d1.js" rel="prefetch"><link href="dist/js/chunk-2d0ab10b.0e224dbf.js" rel="prefetch"><link href="dist/js/chunk-2d0abe0f.94c914d7.js" rel="prefetch"><link href="dist/js/chunk-2d0ac5dc.1d1bb02c.js" rel="prefetch"><link href="dist/js/chunk-2d0afe0d.bf066d25.js" rel="prefetch"><link href="dist/js/chunk-2d0b1c6f.f3c34e9c.js" rel="prefetch"><link href="dist/js/chunk-2d0b361e.f24689bd.js" rel="prefetch"><link href="dist/js/chunk-2d0b91e5.fadbdc10.js" rel="prefetch"><link href="dist/js/chunk-2d0b92c3.52bac6b0.js" rel="prefetch"><link href="dist/js/chunk-2d0b978a.f02411f2.js" rel="prefetch"><link href="dist/js/chunk-2d0b9b64.a3b7b0e2.js" rel="prefetch"><link href="dist/js/chunk-2d0ba309.02149e2b.js" rel="prefetch"><link href="dist/js/chunk-2d0bd54e.c6794f4b.js" rel="prefetch"><link href="dist/js/chunk-2d0be174.cfca2bec.js" rel="prefetch"><link href="dist/js/chunk-2d0c09f6.f3cf9ea8.js" rel="prefetch"><link href="dist/js/chunk-2d0c0a44.acfd4033.js" rel="prefetch"><link href="dist/js/chunk-2d0c14fc.4b3116f3.js" rel="prefetch"><link href="dist/js/chunk-2d0c191e.4994e978.js" rel="prefetch"><link href="dist/js/chunk-2d0c1a01.1b2967c3.js" rel="prefetch"><link href="dist/js/chunk-2d0c20be.de21aadc.js" rel="prefetch"><link href="dist/js/chunk-2d0c4a65.0cd59c76.js" rel="prefetch"><link href="dist/js/chunk-2d0c5538.8e8634f2.js" rel="prefetch"><link href="dist/js/chunk-2d0d5cb9.3547f556.js" rel="prefetch"><link href="dist/js/chunk-2d0d6590.07c7a6e4.js" rel="prefetch"><link href="dist/js/chunk-2d0d9fbc.08147ed6.js" rel="prefetch"><link href="dist/js/chunk-2d0da701.364ae0e3.js" rel="prefetch"><link href="dist/js/chunk-2d0dad5f.bc456c65.js" rel="prefetch"><link href="dist/js/chunk-2d0db0f2.bb3276f8.js" rel="prefetch"><link href="dist/js/chunk-2d0dd3b1.c0ec6c51.js" rel="prefetch"><link href="dist/js/chunk-2d0dddce.5a0d97af.js" rel="prefetch"><link href="dist/js/chunk-2d0ddf37.6fecab33.js" rel="prefetch"><link href="dist/js/chunk-2d0de01b.aea9cd3b.js" rel="prefetch"><link href="dist/js/chunk-2d0e2326.46e0dfe8.js" rel="prefetch"><link href="dist/js/chunk-2d0e4e1f.976b8d32.js" rel="prefetch"><link href="dist/js/chunk-2d0e5089.2caabcf3.js" rel="prefetch"><link href="dist/js/chunk-2d0e524c.e88a9cb2.js" rel="prefetch"><link href="dist/js/chunk-2d0e9726.128b8ec1.js" rel="prefetch"><link href="dist/js/chunk-2d0e9742.98466fae.js" rel="prefetch"><link href="dist/js/chunk-2d0e9802.911b1278.js" rel="prefetch"><link href="dist/js/chunk-2d0f026c.f437d660.js" rel="prefetch"><link href="dist/js/chunk-2d207d47.619f3d6b.js" rel="prefetch"><link href="dist/js/chunk-2d2082b9.04099460.js" rel="prefetch"><link href="dist/js/chunk-2d208ffa.258996a9.js" rel="prefetch"><link href="dist/js/chunk-2d20ec02.917aff76.js" rel="prefetch"><link href="dist/js/chunk-2d20f68f.70af391b.js" rel="prefetch"><link href="dist/js/chunk-2d20ff53.18de3d7d.js" rel="prefetch"><link href="dist/js/chunk-2d210a7a.a6e9e73d.js" rel="prefetch"><link href="dist/js/chunk-2d216004.d4985acd.js" rel="prefetch"><link href="dist/js/chunk-2d216037.2ed6cede.js" rel="prefetch"><link href="dist/js/chunk-2d2160a3.2f3400cd.js" rel="prefetch"><link href="dist/js/chunk-2d216642.1dd23711.js" rel="prefetch"><link href="dist/js/chunk-2d217907.3bd419d4.js" rel="prefetch"><link href="dist/js/chunk-2d221c76.db20dd50.js" rel="prefetch"><link href="dist/js/chunk-2d2244e0.1c8f7321.js" rel="prefetch"><link href="dist/js/chunk-2d2254a4.fe83b386.js" rel="prefetch"><link href="dist/js/chunk-2d226d0a.b103d90b.js" rel="prefetch"><link href="dist/js/chunk-2d2299c3.4bfe3eb1.js" rel="prefetch"><link href="dist/js/chunk-2d22bd06.def375cf.js" rel="prefetch"><link href="dist/js/chunk-2d230098.adb9f950.js" rel="prefetch"><link href="dist/js/chunk-2d2308b0.6c83815b.js" rel="prefetch"><link href="dist/js/chunk-2d2375fa.86620513.js" rel="prefetch"><link href="dist/js/chunk-2d238428.9462b5a1.js" rel="prefetch"><link href="dist/js/chunk-3a2f3e67.13278516.js" rel="prefetch"><link href="dist/js/chunk-53cf9065.43d57024.js" rel="prefetch"><link href="dist/js/chunk-f19ee390.aec06c00.js" rel="prefetch"><link href="dist/js/chunk-f42d483e.67ff2fdd.js" rel="prefetch"><link href="dist/css/app.ebf1e866.css" rel="preload" as="style"><link href="dist/css/chunk-vendors.c097b26d.css" rel="preload" as="style"><link href="dist/js/app.f606dff0.js" rel="preload" as="script"><link href="dist/js/chunk-vendors.d36f5bd6.js" rel="preload" as="script"><link href="dist/css/chunk-vendors.c097b26d.css" rel="stylesheet"><link href="dist/css/app.ebf1e866.css" rel="stylesheet"></head><body><noscript><strong>We're sorry but thoughts doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id="app"></div><script src="dist/js/chunk-vendors.d36f5bd6.js"></script><script src="dist/js/app.f606dff0.js"></script></body></html>
\ No newline at end of file
+<!DOCTYPE html><html lang=""><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1,maximum-scale=1,minimum-scale=1"><link rel="icon" href="./dist/logo.png"><title>一个简单的web思维导图实现</title><link href="dist/js/chunk-2d0a3179.d9ba171a.js" rel="prefetch"><link href="dist/js/chunk-2d0a514a.9b7a3240.js" rel="prefetch"><link href="dist/js/chunk-2d0aa579.5eb94d61.js" rel="prefetch"><link href="dist/js/chunk-2d0aa978.29ca76d1.js" rel="prefetch"><link href="dist/js/chunk-2d0ab10b.0e224dbf.js" rel="prefetch"><link href="dist/js/chunk-2d0abe0f.94c914d7.js" rel="prefetch"><link href="dist/js/chunk-2d0ac5dc.1d1bb02c.js" rel="prefetch"><link href="dist/js/chunk-2d0afe0d.bf066d25.js" rel="prefetch"><link href="dist/js/chunk-2d0b1c6f.f3c34e9c.js" rel="prefetch"><link href="dist/js/chunk-2d0b361e.f24689bd.js" rel="prefetch"><link href="dist/js/chunk-2d0b91e5.fadbdc10.js" rel="prefetch"><link href="dist/js/chunk-2d0b92c3.52bac6b0.js" rel="prefetch"><link href="dist/js/chunk-2d0b978a.f02411f2.js" rel="prefetch"><link href="dist/js/chunk-2d0b9b64.a3b7b0e2.js" rel="prefetch"><link href="dist/js/chunk-2d0ba309.02149e2b.js" rel="prefetch"><link href="dist/js/chunk-2d0bd54e.c6794f4b.js" rel="prefetch"><link href="dist/js/chunk-2d0be174.cfca2bec.js" rel="prefetch"><link href="dist/js/chunk-2d0c09f6.f3cf9ea8.js" rel="prefetch"><link href="dist/js/chunk-2d0c0a44.acfd4033.js" rel="prefetch"><link href="dist/js/chunk-2d0c14fc.4b3116f3.js" rel="prefetch"><link href="dist/js/chunk-2d0c191e.4994e978.js" rel="prefetch"><link href="dist/js/chunk-2d0c1a01.1b2967c3.js" rel="prefetch"><link href="dist/js/chunk-2d0c20be.de21aadc.js" rel="prefetch"><link href="dist/js/chunk-2d0c4a65.0cd59c76.js" rel="prefetch"><link href="dist/js/chunk-2d0c5538.8e8634f2.js" rel="prefetch"><link href="dist/js/chunk-2d0d5cb9.3547f556.js" rel="prefetch"><link href="dist/js/chunk-2d0d6590.07c7a6e4.js" rel="prefetch"><link href="dist/js/chunk-2d0d9fbc.08147ed6.js" rel="prefetch"><link href="dist/js/chunk-2d0da701.364ae0e3.js" rel="prefetch"><link href="dist/js/chunk-2d0dad5f.bc456c65.js" rel="prefetch"><link href="dist/js/chunk-2d0db0f2.bb3276f8.js" rel="prefetch"><link href="dist/js/chunk-2d0dd3b1.c0ec6c51.js" rel="prefetch"><link href="dist/js/chunk-2d0dddce.5a0d97af.js" rel="prefetch"><link href="dist/js/chunk-2d0ddf37.6fecab33.js" rel="prefetch"><link href="dist/js/chunk-2d0de01b.aea9cd3b.js" rel="prefetch"><link href="dist/js/chunk-2d0e2326.46e0dfe8.js" rel="prefetch"><link href="dist/js/chunk-2d0e4e1f.976b8d32.js" rel="prefetch"><link href="dist/js/chunk-2d0e5089.2caabcf3.js" rel="prefetch"><link href="dist/js/chunk-2d0e524c.e88a9cb2.js" rel="prefetch"><link href="dist/js/chunk-2d0e9726.128b8ec1.js" rel="prefetch"><link href="dist/js/chunk-2d0e9742.98466fae.js" rel="prefetch"><link href="dist/js/chunk-2d0e9802.911b1278.js" rel="prefetch"><link href="dist/js/chunk-2d0f026c.f437d660.js" rel="prefetch"><link href="dist/js/chunk-2d207d47.619f3d6b.js" rel="prefetch"><link href="dist/js/chunk-2d2082b9.04099460.js" rel="prefetch"><link href="dist/js/chunk-2d208ffa.258996a9.js" rel="prefetch"><link href="dist/js/chunk-2d20ec02.917aff76.js" rel="prefetch"><link href="dist/js/chunk-2d20f68f.70af391b.js" rel="prefetch"><link href="dist/js/chunk-2d20ff53.18de3d7d.js" rel="prefetch"><link href="dist/js/chunk-2d210a7a.a6e9e73d.js" rel="prefetch"><link href="dist/js/chunk-2d216004.d4985acd.js" rel="prefetch"><link href="dist/js/chunk-2d216037.2ed6cede.js" rel="prefetch"><link href="dist/js/chunk-2d2160a3.2f3400cd.js" rel="prefetch"><link href="dist/js/chunk-2d216642.1dd23711.js" rel="prefetch"><link href="dist/js/chunk-2d217907.3bd419d4.js" rel="prefetch"><link href="dist/js/chunk-2d221c76.db20dd50.js" rel="prefetch"><link href="dist/js/chunk-2d2244e0.1c8f7321.js" rel="prefetch"><link href="dist/js/chunk-2d2254a4.fe83b386.js" rel="prefetch"><link href="dist/js/chunk-2d226d0a.b103d90b.js" rel="prefetch"><link href="dist/js/chunk-2d2299c3.4bfe3eb1.js" rel="prefetch"><link href="dist/js/chunk-2d22bd06.def375cf.js" rel="prefetch"><link href="dist/js/chunk-2d230098.adb9f950.js" rel="prefetch"><link href="dist/js/chunk-2d2308b0.6c83815b.js" rel="prefetch"><link href="dist/js/chunk-2d2375fa.86620513.js" rel="prefetch"><link href="dist/js/chunk-2d238428.9462b5a1.js" rel="prefetch"><link href="dist/js/chunk-3a2f3e67.13278516.js" rel="prefetch"><link href="dist/js/chunk-53cf9065.43d57024.js" rel="prefetch"><link href="dist/js/chunk-f19ee390.aec06c00.js" rel="prefetch"><link href="dist/js/chunk-f42d483e.67ff2fdd.js" rel="prefetch"><link href="dist/css/app.160a24e1.css" rel="preload" as="style"><link href="dist/css/chunk-vendors.c097b26d.css" rel="preload" as="style"><link href="dist/js/app.09fcfe0f.js" rel="preload" as="script"><link href="dist/js/chunk-vendors.d36f5bd6.js" rel="preload" as="script"><link href="dist/css/chunk-vendors.c097b26d.css" rel="stylesheet"><link href="dist/css/app.160a24e1.css" rel="stylesheet"></head><body><noscript><strong>We're sorry but thoughts doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript><div id="app"></div><script src="dist/js/chunk-vendors.d36f5bd6.js"></script><script src="dist/js/app.09fcfe0f.js"></script></body></html>
\ No newline at end of file
