* {
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
}
p, h1, ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
}
h1 {
    font-size: 50px;
}
.wrap {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

button {
    font-size: 40px;
    margin: 40px 0;
    padding: 30px;
}
.wtf {
    width: 600px;
    height: 300px;
    background-color: black;
}
.firstTb-list {
    width: 300px;
    margin-right: 60px;
}
.firstTb-list li {
    margin-bottom: 10px;
    font-size: 20px;

}
.firstTb, .secondTb, .thirldTb, .fourthTb, .fifthTb, .sixthTb, .seventhTb, .eighthTb  {
    display: none;
    justify-content: center;
}
.size-list li:first-child {
    margin-bottom: 40px;
}
.size-list {
    margin-right: 0;
}











.active {
    display: flex;
}