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

html{
    font-size: 62.5%;
}

body{
    font-family: 'Inria Sans';
    font-size: 1.6rem;
}

.container{
    display: flex;
    width: 100vw;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    
}
.signalLetter{
    font-size: 2rem;
    text-align: center;
}
.box-circle{
    height: 6rem;
}
.circle{
    width: 6rem;
    height: 6rem;
    margin: 0 auto;
    border-radius: 100%;
    border: 0.4rem #000 solid;
    z-index: 2;
    background-color: aliceblue;
}

.line{
    margin: 0 auto;
    height: 5rem;
    width: 0.2rem;
    background-color: #000;
}

.half-line{
    margin: 0 auto;
    height: 2.5rem;
    width: 0.2rem;
    background-color: #000;
}

.box {
    display: flex;
    justify-content: center;
    align-items: center;
    color: aliceblue;
    font-size: 2rem;
    margin: 0 auto;
    width:13.2rem;
    height: 6rem;
    background-color: blueviolet;
    border-radius: 1rem;
}

.box-blue{
    background-color: #003B4A;
}

.box-green{
    background-color: #17E351;
}

.box-orange{
    background-color: #FD6019;
}

.container-extra{
    background-color: #CFFA25;
    width: 22.5rem;
    margin: 0 auto;
}