html,
body {
    height: 100%;
}

body {
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
    background-color: #f0f0f0;
}

.form-signin {
    width: 100%;
    max-width: 330px;
    padding: 15px;
    margin: 12% auto;
    border-radius: 10px;
    background-color: #fbfbfb;
    box-shadow: 0 0 10px rgb(200 200 200);
}

.form-signin .checkbox {
    font-weight: 400;
}

.form-signin .form-floating:focus-within {
    z-index: 2;
}

.form-signin input[type="email"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.logo {
    font-family : "Ubuntu";
    font-size : 35px;
    font-weight : bold;
}

.tag {
    padding : 3px;
    margin : 2px;
    border-radius : 3px;
}

.item {
    padding : 3px;
    margin : 2px;
    line-height: 30px;
    height : 30px;
    background-color : #f0f0f0;
    border : 1px solid #ccc;
    border-radius: 3px;
}

.explainScaleExercice,
.explainExercice {
    cursor : pointer;
}