*{
  margin:0;
  padding:0;
}
html {
  text-align:center; 
}
body {
    font-family: Gill Sans, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-image: url(/bg_main.png);
    background-size: 512px;
    cursor: url(/icon.png), auto;
    transition: background-color 0.5s ease;
}
li {
  list-style: none;
}
img {
  width:200px;
}

h1 {
  font-size: 33px;
}

.tape {
    background-color: #ccc4b8;
    position: absolute;
    box-shadow: -5px 5px 0px rgba(0, 0, 0, 0.2);
    left: 50%;
    top: 50%;
    opacity: 0.7;
    pointer-events: none;
    overflow: hidden;
    z-index: 600;
}

.T1 {
    transform: translate(-380px, -265px) rotate(-33deg);
    width: 110px;
    height: 40px;
}


.T2 {
    transform: translate(305px, 225px) rotate(-40deg);
    width: 80px;
    height: 25px;
}

.container {
    display: flex;
    width: 700px;
    height: 500px;
    box-shadow: -10px 10px 0px rgba(0, 0, 0, 0.2);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    background: #fff;
}

.sidebar {
    width: 170px;
    background-color: #7F7176;
    color: #424242;
    padding: 20px;
}

.sidebar a {
    color: #424242;
    text-decoration: none;
    transition: all 0.2s ease-in-out;
    display: block;
    height: 25px;
    line-height: 30px;
    padding: 5px 10px 5px 10px;
    font-size: 16px;
}

.sidebar a:hover {
    padding: 5px 15px 5px 15px;
}

.content {
    flex: 1;
    padding: 20px;
    background-color: #F6F0E7;
    overflow-x: hidden;
    overflow-y: hidden;
    color: #788585;
    font-size: 16px;
}

iframe {
    border: none;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
}