style.css

*{
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
}
.left{
    width: 40%;
    float: left;
}
img{
    position: relative;
    left: 50%;
    transform: translate(-50%);
}
#ImageTwo{
    margin-top: 100px;
}
.middle{
    width: 30%;
    float: left;
}
.middle-content{
    width: 400px;
    margin: 60px auto;
}
.buttons{
    width: 200px;
    margin: 0px auto;
}
button{
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 0px;
    font-size: 10px;
    color: white;
    outline: 0px;
}
button:focus{
    border: 2px solid black;
}
.blueButton{
    background-color: blue;
}
.redButton{
    background-color: red;
}
.silverButton{
    background-color: silver;
}
.greyButton{
    background-color: grey;
}
.box{
    height: 15px;
    background-color: blue;
    border-radius: 10px;
    margin-bottom: 10px;
    transition: .7s ease-in-out;
}
p{
    font-size: 12px;
}
#box1{
    width: 300px;
}
#box2{
    width: 280px;
}
#box3{
    width: 320px;
}
#box4{
    width: 240px;
}
#box5{
    width: 200px;
}
.number{
    float: right;
    position: relative;
    font-weight: 700;
}
.half-circle {
    width: 200px;
    height: 100px; /* as the half of the width */
    border-top-left-radius: 110px;  /* 100px of height + 10px of border */
    border-top-right-radius: 110px; /* 100px of height + 10px of border */
    border: 10px solid gray;
    border-bottom: 0;
    margin: 0px auto;
}
#iconMeter{
    position: relative;
    top: 85px;
    left: 15px;
    transform: rotate(110deg);
    transform-origin: 87px 12px;
    transition: .7s ease-in-out;
}
.right{
    width: 30%;
    float: left;
}
.right-content{
    margin: 100px auto;
}
h3{
    text-align: center;
    margin: 10px 0px;
}
@media screen and (max-width: 770px){
    .left{
        width: 100%;
    }
    .middle{
        width: 100%;
    }
    .right{
        width: 100%;
        margin-top: -100px;
    }
}