.center{
    text-align: center;
}
.right{
    text-align: right;
    display: inline-block;
}
.left{
    text-align: left;
    display: inline-block;
}

a:hover{
    text-decoration: none;
}

.btn {
    white-space: normal;
}

/* スマホ表示用のスタイル */
@media screen and (max-width: 767px) {
    .mainText h1 span:first-child {
        display: block;
    }
}