style.css

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


.container{
    max-width: 100vw;
    height: 100vh;
    width: 95%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0px;
}

.bars_container{
    display: flex;
    flex-direction: row;
}

.bar{
    width: 10px;
    background-color: aqua;
    /* margin: 0 2px; */
    border-radius: 2px;
}

body{
    background-color: #2c3e50;
}

.buttons_container > button, select{
    width: 200px;
    height: 30px;
    background-color: #677685;
    border: none;
    border-radius: 5px;
    color: white;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    transition:  0.2s ease-in-out;
}

button:hover{
    background-color: #56697b;
}