.syorui {
    display: block;
    position: relative;
    margin: 40px auto 0 auto;
    width: 40%;
    text-align: center;
    border-radius: 999px;
    background-color: #fce7c7;
}


.btn-gallery01 {
    display: block;
    position: relative;
    margin: auto;
    width: 423px;
    text-align: center;
    border-radius: 999px;
    background-color: #fce7c7;
}


.btn-gallery01::before {
    content: '';
    position: absolute;
    top: calc(50% - 1px);
    right: -20px;
    display: block;
    width: 40px;
    height: 0;
    border-top: solid 2px #fa8c48;
    transition: all .2s ease-out;
}