html {
    font-size: 100%; /* 16px */
}

body{
    color: #24292e;
    font-family: "M PLUS 1p";
}

a {
    text-decoration: none;
}

p {
    font-size: 1.3rem;/* デフォルトサイズの1.3倍 */
}

img{
    max-width: 100%;
}

li{
    list-style: none;
    font-size: 1.1rem;
}

.wrapper {
    max-width: 960px;
    margin: 0 auto 130px auto;
    font-size: 0.9rem; 
    padding: 0 4% ;
}

.site-title {
    line-height: 1px;
    font-weight: 600;
    font-size: 2.4rem; 
    font-family: 'Monoton', serif;
}

.site-title a {
    color:#404546;
}

.sec-title {
    font-size: 2rem;
    text-align:center; 
    margin-bottom: 65px;
    font-family: 'Kanit', sans-serif;
}

/* header */
#header {
    max-width: 960px;
    display: flex; /* 親要素に対してflexを当てると子要素が横並びになる */
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
    padding: 0 4%;
    height: 170px;
}

#header ul {
    display: flex;
    padding: 10px 0;
    align-items: center;
}

#header ul li {
    font-size: 0.9rem;
    margin-left: 30px;
}

#header ul li a {
    color: #24292a;
    transition: all 0.3s;
}

#header ul li a:hover{
    opacity: 0.5;
}

#header li img.icon{
    width: 30px;
}

/* main */
#main{
    margin-bottom: 80px;
}

#main img {
    width: 100%;
    max-width: 1920px;
    height: 400px;
    object-fit: cover;
}

/* News */
#news dl {
    display: flex;
    flex-wrap: wrap;
    border-top: 2px dotted #c8c8c8;
    margin-bottom: 20px;
}

#news dt {
    width: 20%;
    border-bottom: 2px dotted #c8c8c8;
    padding: 15px;
}

#news dd {
    width: 80%;
    border-bottom: 2px dotted #c8c8c8;
    padding: 15px;
}

/* Hobby */
main {
    margin-bottom: 80px;
}

#hobby-pic {
    margin-top: 70px; 
    text-align: center
}

#hobby-pic img {
    width: 50%;
    max-width: 1920px;
}

#hobby-pic p {
    font-size: 0.8rem;
}

/* assignment */
#assignment ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

#assignment ul li {
    width: 25%;
    margin-bottom: 23px;
}

#assignment ul li img {
    cursor: pointer;
    transition: all -0.3s
}

#assignment ul li img:hover {
    transform: scale(1.2,1.2);
    opacity: 0.6;
}

/* 携帯用 */
@media screen and (max-width: 680px){
    .site-title {
        margin-top: 20px;
    }
 
    /* header */
    #header {
        flex-direction: column;
        height: auto;
        line-height: 40px;
        margin-top: 20px;
    }

    #header li {
        font-size: 0.8rem;
        margin-left: 20px;
        margin-top: 10px;
    }

    #header li img.icon {
        width: 20px;
        margin-top: 15px;
    }
    /* News */
    #news dl{
        flex-direction: column;
    }

    #news dt {
        width: 100%;
        border-bottom: none;
        padding-bottom: 0;
    }

    #news dd {
        width: 100%;
        padding-top: 0;
    }
    
}