.check-list {
    margin: 0;
    padding-left: 1.2rem;
}

.check-list li {
    position: relative;
    list-style-type: none;
    padding-left: 2.5rem;
    margin-bottom: 0.5rem;
}

.check-list li:hover { cursor: pointer }
.isWorking::before {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    top: 2px;
    width: 5px;
    height: 11px;
    border-width: 0 2px 2px 0;
    border-style: solid;
    border-color: #00a8a8;
    transform-origin: bottom left;
    transform: rotate(45deg) translate(0, -5px);
}

.isHalfWorking::before {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    top: -2px;
    width: 10px;
    height: 10px;
    border-width: 2px 2px 2px 2px;
    border-style: solid;
    border-color: #ffa500;
    transform-origin: bottom left;
    transform: rotate(45deg);
}

.note-item::before {
    content: '';
    display: block;
    position: absolute;
    left: 2px;
    top: -10px;
    width: 10px;
    height: 9px;
    border-width: 0 2px 0 0;
    border-style: solid;
    border-color: #808080;
    transform-origin: bottom left;
    transform: rotate(90deg);
}

div { margin: auto }
*, *:before, *:after { box-sizing: border-box }

html {
    -webkit-font-smoothing: antialiased;
    font-family: "Helvetica Neue", sans-serif;
    font-size: 62.5%;
    height: 100%;
}

body {
    font-size: 1.6rem; /* 18px */
    background-color: #efefef;
    color: #324047;
    height: 100%;
}

section {
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    align-items: center;
    height: 100%;
}