html{
    font-size: 625%;
}
body{
	font-size: .14rem;
    font-weight: 300;
    font-style: normal;
}
a:hover{
  opacity:0.7;
  transition:0.4s;
}

.sp_only{
    display: none;
}
header{
    padding: 10px 20px;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
}
.back_link{
    flex: 0 1 auto;
    width: 210px;
}
.back_link a{
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    font-size: .15rem;
}
.back_link img{
    margin-right: 12px;
    width: 17px;
}
.header_logo{
    padding-right: 200px;
    flex: 0 1 auto;
    width: calc(100% - 210px);
    text-align: center;
}
.header_logo img{
    width: 267px;
}

footer{
    padding: 5px 20px;
}
footer small{
    margin: 0 auto;
    width: 100%;
    display: block;
    max-width: 1243px;
}
footer .back_link{
     display: none;   
}
/*スマホ*/
@media(max-width: 750px){
    .sp_only{
        display: block;
    }
    .pc_only{
        display: none;
    }
    .back_link{
        display: none;
    }
    .header_logo{
        padding-right: 0;
        width: 100%;
    }
    footer .back_link{
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: #000;
    }
    footer .back_link a{
        justify-content: center;
        height: 49px;
    }
}
/*スマホ*/
@media(max-width: 599px){
    footer {
        margin-bottom: 58px;
    }
}