html {
    font-size: 10px;
}

body {
    position: relative;
    margin: 0;
    text-align: center;
}
.box_top {
    margin-top: 10%;
}
p.destop {
    font-size: 2.0rem;
    font-weight: 800;
}
p.company a {
    font-size: 1.5rem;
}
h2.des,p.des2 {
    font-weight: 600;
    line-height: 180%;
    letter-spacing: 1px;
    font-size: 1.4em;
}
footer {
    position: fixed;
    bottom: 0;
    text-align: center;
    margin: auto;
    width: 100%;
    color: #ffffff;
    background-color: #0f582f;
    font-size: 1.1rem;
}


@media screen and (max-width:680px) {
h1.logo_box img {
    width: 80%;
}
.box_top {
    width: 90%;
    margin: auto;
    margin-top: 15vh;
}
p.company {
    margin-top: 4vh;
}
p.footer {
    padding: 0 2%;
}
.sp {
    display: block;
}
}