* {margin: 0;padding: 0; box-sizing: border-box;}
ul {list-style-type: none;}
a {text-decoration: none; color: #222; font-size: 80%;}
.notice {
    width: 300px;
    height: 100vh;
    float: right;
    margin-right: 10px;
    text-align: left;
}
.notice li {
    border-bottom: 1px dotted #333;
    border-left: 1px solid #333;
    border-right: 1px solid #333;
}
.notice li span {
    color: red;
}
.notice li:last-child {
    border-bottom: 1px solid #333;
    margin-bottom: 10px;
}
.notice li:first-child {
    border-top: 1px solid #333;
}
.notice li a {
    padding: 10px 0;
    display: block;
    padding-left: 10px;
}
.notice li:hover a {
    background-color: yellow;
}
.pass {
    background-color: rgb(230, 230, 255);
    text-align: center;
}
.btn {
    margin-top: 2px;
    margin-bottom: 7px;
}
.btn_1 {
    margin-bottom: 10px;
}
.btn_2 {
    margin-top: 13px;
}
.btn_3 {
    margin-top: 10px;
}
.btn img {
    width: 300px;
}