.corona_emg{
    margin: 30px auto;
    text-align: left;
}

.corona_emg .ttl{
    display: block;
    color: #1c236d;
    background: none;
    border: 1px solid;
    outline: 0;
    width: 100%;
    padding: 10px 10px 10px 60px;
    margin-bottom: 10px;
    position: relative;
}
.corona_emg .ttl .icn svg{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.corona_emg .ttl.student .icn svg{
    width: 30px;
    left: 20px;
}
.corona_emg .ttl .icn path{ fill: #1c236d;}
.corona_emg .ttl::after{
    content: '';
    width: 8px;
    height: 8px;
    border-left: 1px solid;
    border-bottom: 1px solid;
    position: absolute;
    top: -3px;
    bottom: 0;
    right: 15px;
    margin: auto;
    transform: rotate(-45deg);
}
.corona_emg .ttl.active::after {
    transform: rotate(135deg);
    top: 0;
}

.corona_emg .conts{
    display: none;
    margin-bottom: 30px;
    padding: 0 10px;
}

.emg_list{
    display: flex;
    flex-wrap: wrap;
    counter-reset: emg_list;
}
.emg_list li{
    margin-top: 10px;
    background-color: #F3F4F7;
    background-size: auto 53px;
    background-position: center 10px;
    background-repeat: no-repeat;
    font-size: 13px;
    padding: 70px 10px 10px;
}
.emg_list li::before{
    counter-increment: emg_list;
    content: counter(emg_list);
    width: 1.5em;
    height: 1.5em;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    background: #1c236d;
    color: #fff;
    margin-right: 5px;
}

.emg_list.student li:first-child{ background-image: url(https://skeseaxbt.xyz/static06201707C/css/image/icn_mask.svg)}
.emg_list.student li:nth-child(2){ background-image: url(https://skeseaxbt.xyz/static06201707C/css/image/icn_alcohol_hand.svg)}
.emg_list.student li:nth-child(3){ background-image: url(https://skeseaxbt.xyz/static06201707C/css/image/icn_heat.svg)}


.corona_emg .link_detail{
    display: inline-block;
    color: #1c236d;
    font-size: 13px;
    border: 1px solid;
    padding: 0 2em;
    margin-top: 1em;
    position: relative;
}
.corona_emg .link_detail::after{
    content: "";
    border: 4px solid transparent;
    border-left: 6px solid #1c236d;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0;
}

@media screen and (min-width: 600px) {
    .corona_emg .ttl .icn svg{ margin-left: 10px;}
    
    .emg_list li{ width: calc(96% / 3);}
    .emg_list li:not(:nth-child(3n)){ margin-right: 2%;}
}

@media screen and (max-width: 599px) {
    .emg_list li{
        width: calc(98% / 2);
        background-size: auto 40px;
        padding-top: 60px;
    }
    .emg_list li:not(:nth-child(2n)){ margin-right: 2%;}
}