section {
    padding: 2vw;
    font-size: 1rem;
}
.p-center {
    text-align: center;
}
.inner-box {
    display: inline-block;
    width: 48rem;
    margin: 1rem
}
h1 {
    font-size: 2rem;
    text-decoration: underline;
    text-align: center;
}
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
    vertical-align: top;
    margin-top: 2.5rem;
    margin-left: 2rem;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    -webkit-transition: .4s;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
    -webkit-transform: translateX(26px);
    -ms-transform: translateX(26px);
    transform: translateX(26px);
}
.button-area {
    width: 44rem;
    height: 7rem;
    margin-left: auto;
    margin-right: auto;
    border: .2rem solid #999999;
}
button {
    width: 40rem;
    height: 3rem;
    background-color: #999999;
    margin: 2rem;
    color: #ffffff;
    font-size: 1.5rem;
}
button:hover {
    cursor: pointer;
}