*{
    box-sizing: border-box;
}
html{
    font-size: 62.5%;
}
body{
    margin: 0;
    padding: 0;
    font-family: 'Kosugi Maru', sans-serif;
    font-size: 1.6rem;
    color: #0f2350;
    line-height: 1.6;
}
.main-wrap{
    display: block;
    text-align: center;
}
.link-wap{
    display: block;
}
h3{
    border-bottom:2px solid #696969;
}
.link{
    margin-top: 50px;
    margin-bottom: 80px;
}
a{
    display: block;
    margin: 20px;
    text-decoration: none;
}
a:hover{
    opacity: 0.5;
}
img {
    margin: 0 auto;
	max-width: 50%;
	vertical-align: top;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
}
.guide .link1{
    max-width: 100%;
    display: block;
    margin: 0 auto;
}
li{
    margin-left: 20px;
    list-style: none;
}

.link1 li a{
    padding: 50px;
    background-color:#ffff;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
    font-size: larger;
    font-weight: bold;
}
.link1 li .dneo{
    color: #0000ff;
}
.link1 li .dneosp{
    color: #00bfff;
}
.link2 li a{
    padding: 50px;
    background-color:#ffff;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
    font-size: larger;
    font-weight: bold;
}
.link2 li .mattermost{
    color: #000080;
}
.link2 li .slack{
    color: #800080;
}
.link3 li a{
    padding: 50px;
    color: #000;
    background-color:#ffff;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
    font-size: larger;
    font-weight: bold;
}
.link4 li a{
    padding: 50px;
    color: #808000;
    background-color:#ffff;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
    font-size: larger;
    font-weight: bold;
}
.link5 li a{
    padding: 50px;
    color: #000;
    background-color:#ffff;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
    font-size: larger;
    font-weight: bold;
}
.guide li a{
    padding: 50px;
    color: #696969;
    background-color:#f5f5f5 ;
    box-shadow: 2px 2px 2px 2px #9a9a9a;
    border-radius: 5px;
}
ul {
    max-width:70%;
    display: flex;
    flex-wrap: wrap;
    padding-left: 0;
}
.ul-wrap{
    display: block;
    margin: 0 auto;
}
.ul-wrap ul{
    margin: 0 auto;
}
@media screen and (min-width:640px) {
    html{
        background-color: #fff;
    }
	#wrapper {
        max-width: 960px;
	    margin: auto;
	}
    
    h3{
        width: 600px;
        margin: auto;
        text-align: left;
    }
    a{
        margin: 10px 5px;
        display: inline-block;
        width: 300px;
    }
    img {
        margin: 0 auto;
        max-width: 100%;
        vertical-align: top;
        flex: 1 1 50%;
    }
}