.main {
    display:flex
}

.wrapper {
    border: 6px ridge;
    width: 1500px;
    margin: auto;
    margin-top: 20px;
    box-sizing: border-box;
}

.side {
    border-right: 6px ridge;
    width: 200px;
    padding: 12px;
    box-sizing: border-box;
    min-height: 760px;
}

.button {
    display: block;
    line-height: 40px;
    text-align: center;
    font-weight: bold;
    margin-bottom: 12px;
    font-size: 17px;
    border-radius: 5px;
    text-decoration: none;
    letter-spacing: 1px;
  }

.content {
    flex-grow: 1;
}

iframe.content {
    border: 0;
    width: 100%;
    height: 100%;
}

.header {
    border-bottom: 6px ridge;
    height: 160px;
    box-sizing: border-box;
    position: relative;
}

.title {
    padding-top: 20px;
    padding-left: 20px;
}