style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
html,body{
    width: 100%;
    height: 100%;
}
*::selection{
    background-color: lightseagreen;
    color:crimson ;
}

.main{
    height: 100%;
    width: 100%;
    background:linear-gradient(to right bottom,black,white);
    display: flex;
    align-items: center;
    justify-content: center;
}
#panel{
    height: 90%;
    width: 90%;
    background:linear-gradient(to right bottom,white,black);
    border: 2px solid black;
    border-radius: 10px;
    overflow: hidden;
}
.ptop{
    padding: 0px 30%;
    height: 95px;
    width: 100%;
    background-color: rgb(44, 124, 194);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.elem{
    display: flex;
    /* background-color: aquamarine; */
    align-items: center;
    gap: 20px;
}

.box{
    color: black;
    font-weight: 600;
    font-size: 25px;
    padding: 10px 20px;
    background-color: #fff;
    border-radius: 5px;
}

.pbotm{
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px;
    width: 100%;
    color: #fff;
    
    height: calc(100% - 95px);
    background-color: black;
}

.bubble{
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content:center;
    height: 50px;
    width: 50px;
    background: linear-gradient(rgb(28, 122, 50),rgb(168, 205, 162));
    border-radius: 50%;
    color: white;
}
.bubble:hover{
    background:linear-gradient(blue,white);
    cursor: pointer;
    color: black;
}