CSS for react-todo app

App.css

/* To-Do List */
/*-----------------------------------------*/

#root {
   display: flex;
   justify-content: center;
   height: 100vh;
}

.todo-list {
   align-self: center;
   background-color: white;
   border-radius: 5px;
   width: 400px;
}

.todo-list h1 {
   background-color: #a071b8;
   border-top-left-radius: 5px;
   border-top-right-radius: 5px;
   color: white;
   font-size: 2rem;
   padding: 0.5rem 1rem;
   text-align: center;
}

.todo-list li {
   border-bottom: 1px solid #dbdbdb;
   display: flex;
   font-size: 1.25rem;
   padding: 1rem;
   align-items: flex-start;
}

.todo-list li span {
   flex: 1 0 60%;
   font-size: .9rem;
   margin-right: 1rem;
   margin-top: 0.33333rem;
}

.todo-list li input[type="checkbox"] {
   display: none;
}

.todo-list li input[type="checkbox"] + label:before {
   display: inline-block;
   color: #c2c2c2;
   content: "\f10c";
   cursor: pointer;
   font-family: FontAwesome;
   letter-spacing: 1rem;
   margin-left: 1rem;
}

.todo-list li input[type="checkbox"] + label:hover::before {
   color: #4ccbb0;
}

.todo-list li input[type="checkbox"]:checked + label:before {
   color: #4ccbb0;
   content: "\f05d";
}

.todo-list li button {
   background: transparent;
   border: 0;
   color: #c2c2c2;
   cursor: pointer;
   font-size: 1.25rem;
   padding: 0;
}

.todo-list li button:hover {
   color: #fa4f4f;
}

.add-todo {
   background-color: #c2c2c2;
   padding: 1rem;
}

.add-todo form {
   align-items: center;
   display: flex;
   justify-content: space-between;
}

.add-todo form input[type="text"] {
   background-color: transparent;
   border: 0;
   border-bottom: 1px solid #8f8f8f;
   font-size: 1rem;
   line-height: 1;
   padding: 0.33333rem;
}

.add-todo form input[type="text"]:focus {
   border-bottom-color: #a071b8;
}

.add-todo form span {
   color: #8f8f8f;
   font-size: 0.9rem;
   line-height: 1;
   text-align: right;
}

.todo-admin {
   align-items: center;
   display: flex;
   font-size: 0.9rem;
   justify-content: space-between;
   min-height: 68px;
   padding: 1rem;
}

.todo-admin div span {
   color: #c2c2c2;
}

.todo-admin button {
   background-color: transparent;
   border: 1px solid #a071b8;
   color: #a071b8;
   cursor: pointer;
   font-size: .9rem;
   padding: 0.16667rem 0.33333rem;
}

.todo-admin button:hover {
   border: 1px solid #4ccbb0;
   color: #4ccbb0;
}

index.css

/* Imported Fonts */
/*-----------------------------------------*/

@import url(https://fonts.googleapis.com/css?family=Roboto:400,400italic,700,700italic);
@import url(https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css);

/* CSS Reset */
/*-----------------------------------------*/

/* http://meyerweb.com/eric/tools/css/reset/
   v2.0 | 20110126
   License: none (public domain)
*/
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
   margin: 0;
   padding: 0;
   border: 0;
   font-size: 100%;
   font: inherit;
   vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
   display: block;
}

body {
   line-height: 1;
}

ol, ul {
   list-style: none;
}

blockquote, q {
   quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
   content: '';
   content: none;
}

table {
   border-collapse: collapse;
   border-spacing: 0;
}

/* Global */
/*-----------------------------------------*/

* {
   box-sizing: border-box;
}

*:focus {
   outline: none;
}

html {
   font-size: 18px;
}

body,
button,
input {
   color: #111111;
   font-family: 'Roboto', sans-serif;
   font-size: 1rem;
   line-height: 1.5;
}

body {
   background-color: #2e2e2e;
}