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

html, body{
    width: 100%;
    height: 100%;
}


.main{
    width: 100%;
    height: 100%;
    background-color: salmon;
    display: flex;
    justify-content: center;
    align-items: center;

}

.card{
    width: 80%;
    height: 80%;
    /* margin: auto; */
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
}

.top{
    width: 100%;
    height: 15%;
    background-color: rgb(167, 77, 66);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}
.blocks h3{
    letter-spacing: 2px;
    font-weight: 300;
}

.blocks{
    width: 20%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.boxs{
    /* width: 15%;
    height: 40px; */
    padding: 2px 10px;
    color: salmon;
    font-size: 25px;
    border-radius: 3px;
    background-color: white;
}

.playground{
    width: 100%;
    height: 85%;   /*total - top (100%-15%)*/    
    padding: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    color: rgb(167, 77, 66);
}

.bubble{
    width: 60px;
    height: 60px;
    background-color: salmon;
    font-size: 25px;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bubble:hover{
    background-color: rgb(167, 77, 66);
    cursor: pointer;
}

.startbtn{
    width: 25%;
    height: 60px;
    font-size: 50px;
    border: none;
    background-color: rgb(167, 77, 66);
    color: white;
    border-radius: 5px;
    cursor: pointer;
}