#app{
    width: 1514px;
    margin: auto;
    background-color: #ffffff;
}
/* main */
.main{
    width: 100%;
    text-align: center;
    font-family: "Gilroy", Futura, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}
.mainbox{
    height: 146px;
}
.himg{
    display: inline-block;
    position: relative;
    top: 100px;
    left: 100px;
}
.htitle{
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hnone{
    display: none;
}
.htext{
    width: 683px;
    font-weight: 400;
    font-size: 20px;
    line-height: 34px;
    color: #514b5f;
}
/* link */
.links{
    height: 540px;
    display: flex;
    justify-content: space-around;
    margin:70px 0 120px ;

}
.linksbox{
    padding: 20px;
    box-sizing: border-box;
    white-space: wrap;
    height: 306px;
    position: relative;
}
.linklist{
    width: 22%;
    border-radius: 16px;
}
.btnurl{
    padding: 16px 30px;
    background-color: #ffffff;
    border-radius: 8px;
    border: 2px solid black;
    width: 130px;line-height: 1;
    cursor: pointer;
    font-weight: 600;
    position: absolute;
    left: 20px;
    bottom: 20px;
}
.btnurl::after{
    display: block;
    content: "";
    position: absolute;
       border-bottom: 2px solid black;
       border-right: 2px solid black;
       opacity: 0;
       width: 0;
       height: 0;
    border-radius: 0 0 8px 0;
       bottom: -9px;
       right: -9px;
    transition: all 0.4s 0s ;
}
.btnurl:hover::after{
    opacity: 1;
    width: 130px;
    height: 52px;
    transition: all 0.4s 0s ;
}

@media screen and (max-width: 720px) {
    #app{width: 100%;margin: auto;overflow: hidden;}
    .main{margin-top: 100px; width: 100%;}
    .mainbox{display: none;}
    .htitle{display: none;}
    .htit{font-size: 36px;}
    .hnone{display: block;}
    .htext{white-space: wrap;width: 100%;padding: 0 20px;margin: 20px 0 60px;}
    .links{display: block;width: 90%;margin: auto;height: auto;}
    .linksbox{height: auto;}
    .linklist{width: 100%;}
    .linklist img{display: none;}
    .btnurl{display: block;position: initial;margin: 20px 0 0;}
    .linksbox p{display: none;}
}