*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    margin: 0;
    padding: 0;
}

.container{
    margin: 3%;
}

.container .section{
    display: flex;
    flex-direction: column;
}

.container .section .leftbar{
    width: 100%;
}


.container .postdetail{
    max-width: 900px;
}

.postdetail > div{
    margin-top: 20px;
}

.postdetail > div > div{
    margin: 10px 0;
    line-height: 1.3;
}
.postdetail span{
    font-size: 18px;
}
.postdetail span:first-child{
    color: red;
    font-size: 22px;
    font-weight: 600;
    width: 20%;
}
.postdetail span:nth-child(2){
    color: black;
    font-size: 21px;
    font-weight: 400;
}

.join{
    margin-top : 20px;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}

.join a{
    color: #fff;
    text-decoration: none;
    padding: 20px 30px;
    font-size: 20px;
    transition: 1s;
    text-align: center;
    border-radius: 4px;
}

.join a:hover{
    opacity: 0.9;
    transform: scale(1.05);
}

.post{
    font-size: 19px;
    line-height: 2;
    margin-top: 30px;
}

.post ul{
    width: calc(100% - 25px);
    margin-left: auto;
}

.post ol{
    list-style-type: lower-alpha;
    width: calc(100% - 30px);
    margin-left: auto;
}

.post li {
    font-size: 16px;
}

.post table{
    width: 100%;
}

.post table{
	border-top: 1px solid rgba(0,0,0,1);
	border-left: 2px solid rgba(0,0,0,1);
	border-right: 2px solid rgba(0,0,0,1);
	border-bottom: 1px solid rgba(0,0,0,1);
	border-collapse: collapse;
	text-align: center;
    cursor: auto;
}

.post table:first-child{
    border-top: 2px solid rgba(0,0,0,1);
}

.post table:last-child{
    border-bottom: 2px solid rgba(0,0,0,1);
}

.post th,
.post td{
    padding: 5px 2px;
	border: 1px solid rgba(0,0,0,0.2);
	border-collapse: collapse;
	text-align: center;
}

.post tr:first-child,.post tr:first-child td{
    border-top: 0;
}

.post tr:last-child,.post tr:last-child td{
    border-bottom: 0;
}

.post table:last-child td,.post table:nth-last-child(2) td{
    font-size: 19px;
}

table:nth-last-child(1) tr:first-child td,table:nth-last-child(2) tr:first-child td{
    font-size: 25px;
}

.post table tr{

}

.post table th{
    background-color: blue;
	color: white;
}

.post .red{
    color: red;
}

.post .blue{
    color: blue;
}

.post .green{
    color: green;
}

.post .purple{
    color: purple;
}

.post .text-center{
    text-align: center;
}

.post .box-center{
    margin-left: 50%;
    transform: translateX(-50%);
}

.post .font16{
    font-size: 16px;
}

.post .font-20{
    font-size: 20px;
}

.post .font-24{
    font-size: 24px;
}

.post .font-28{
    font-size: 28px;
}

.post  .boxx{
    border-top: 1px solid rgba(0,0,0,0.7);
    border-bottom: 1px solid rgba(0,0,0,0.7);
    border-left: 2px solid rgba(0,0,0,0.7);
    border-right: 2px solid rgba(0,0,0,0.7);
    padding: 10px 7px;
}

.post .boxx:first-child{
    border-top: 2px solid rgba(0,0,0,1);
}

.post .boxx:last-child{
    border-bottom: 2px solid rgba(0,0,0,1);
}

.post .my-0{
    margin: 0 0;
}
.post .my-2{
    margin: 2px 0;
}
.post .my-5{
    margin: 5px 0;
}
.post .my-8{
    margin: 8px 0;
}
.post .my-10{
    margin: 10px 0;
}

.post .py-0{
    padding: 0 0;
}
.post .py-2{
    padding: 2px 0;
}
.post .py-5{
    padding: 5px 0;
}
.post .py-8{
    padding: 8px 0;
}
.post .py-10{
    padding: 10px 0;
}

.post .bold{
    font-weight: 600;
}

.container .section .rightbar{
    width: 100%;
    margin-top: 30px;
}
.post #youtube{
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.post #youtube img {
    width:300px;
    max-width:100%;
}

@media screen and (min-width: 500px) {
    
    .container .section{
        display: flex;
        flex-direction: row;
        justify-content: space-between;
    }

    .container .section .leftbar{
        width: 66%;
    }

    .container .section .rightbar{
        width: 31%;
        margin-top: 0;
    }
    
    .post table tr:first-child td{
        font-size: 28px;
    }

    .post ul{
    width: calc(100% - 50px);
    margin-left: auto;
    }

    .post ol{
        list-style-type: lower-alpha;
        width: calc(100% - 60px);
        margin-left: auto;
    }

    .post li {
        font-size: 20px;
    }
}


@media screen and (max-width: 900px) {
    
    .join a{
        color: #fff;
        text-decoration: none;
        padding: 15px 10px;
        margin: 0 2px;
        font-size: 15px;
        transition: 0.5s;
        text-align: center;
    }
}