【悲報】文系さん、この動画が理解できない

.mm-ttl{ font-size:14px; margin-bottom: 15px;}
.mm-ttl .Ttl-mil{ font-size:14px !important; color: gray;}
.mm-ttl .Ttl-mil span{ color: rgb(0, 128, 0); font-size: 15px !important; font-weight: bold;}
.at_out ul{-webkit-padding-start: 0; margin: 0 !important; padding: 0;}
.at_out li{ list-style-type:none !important; font-size:16px; line-height:1.2; font-weight: bold; margin-left: 0 !important; margin-bottom: 20px !important;}
.at_out li a{ text-decoration:underline; color:rgb(0, 102, 204); list-style-type:none;}
.pc_none{ display:none;}
.sp_none{ display:block;}

.mm-ttl{ font-size:14px; margin-bottom: 15px;}
.mm-ttl .Ttl-mil{ font-size:14px !important; color: gray;}
.mm-ttl .Ttl-mil span{ color: rgb(0, 128, 0); font-size: 15px !important; font-weight: bold;}
.at_out ul{-webkit-padding-start: 0; margin: 0 !important; padding: 0;}
.at_out li{ list-style-type:none !important; font-size:16px; line-height:1.2; font-weight: bold; margin-left: 0 !important; margin-bottom: 20px !important;}
.at_out li a{ text-decoration:underline; color:rgb(0, 102, 204); list-style-type:none;}
.pc_none{ display:none;}
.sp_none{ display:block;}

.ninki{ clear:both; margin-bottom: 15px;}
.mm-ttl{ font-size:14px;}
.mm-ttl .Ttl-mil{ font-size:15px !important; color: gray;}
.mm-ttl .Ttl-mil span{ color: rgb(0 128 0); font-size: 15px !important; font-weight: bold;}
.at_out ul{-webkit-padding-start: 0; margin: 0 !important; padding: 0;}
.at_out li{ list-style-type:none !important; font-size:16px; line-height:1.2; font-weight: bold; margin-left: 0 !important; margin-bottom: 20px !important;}
.at_out li a{ text-decoration:underline; color:rgb(0 102 204); list-style-type:none;}
.pc_none{ display:none;}
.sp_none{ display:block;}