html, body {
    margin: 0;
    padding: 0;
}

#mainDiv {
    width: 480px;
    height: auto;
    margin: 20px auto;
    padding: 0;
}

.title {
    width: 100%;
    height: auto;
    margin: auto;
    padding: 5px;
    font-size: 30px;
    text-align: center;
    background-color: #cce6ff;
    border-radius: 10px 10px 10px 10px;
}

.testControl {
    width: 100%;
    height: auto;
    margin: 0;
    padding: 0;
    vertical-align: middle;
}

.testField {
    width: 100%;
    height: auto;
    margin: 0;
    padding: 0;
    vertical-align: middle;
}

.configOption {
    width: 100%;
    height: auto;
    margin: 10px;
    padding: 0;
    vertical-align: middle;
}

.question {
    width: 100%;
    height: auto;
    margin: 10px;
}

.question > .questionText {
    white-space: pre-wrap;
    text-align: left;
}

.question > .digits {
    margin: 30px;
    text-align: center;
    font-size: 150%;
    font-family:monospace;
}

.score {
    height: 100px;
    width: 100%;
    margin: auto;
    /* background-color: grey; */
}

.score > .correctScore, .score > .wrongScore {
        height: 100px;
        width: 50%;
        float: left;
        text-align: center;
    }

.score > .wrongScore {
    color: red;
    font-size: 30px;
    line-height: 100px;
}

.score > .correctScore {
    color: green;
    font-size: 30px;
    line-height: 100px;
}

.answer {
    margin: 20px;
    width: 100%;
    height: auto;
    text-align: center;
    vertical-align: middle;
}

.answer > .input {
    /* width: 200px; */
    margin: auto;
    height: auto;
}

.button_div {
    margin: auto;
    /* background: #809fff; */
    padding: 5px;
    display: flex;
    justify-content: space-around;
    -webkit-border-radius: 0px;
    -moz-border-radius: 0px;
    border-radius: 0px;
    resize: none;
    /* border:1px solid #30273a; 
    box-shadow: 0 0 10px #8d78a5;
    border-radius: 15px 15px 15px 15px;
    */
}

.button {
    background-color: #809fff; /* Green */
    margin: 5px;
    border: 1px;
    border-radius: 10px 10px 10px 10px;
    color: white;
    padding: 5px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 15px;
    min-width: 100px;
    hocus--background-color:blue-400;
}

.button:hover {
  background-color: green;
}

.btn {
    padding: 0.8rem 1rem 0.7rem;
    border: 0.2rem solid #4d4d4d;
    cursor: pointer;
    text-transform: capitalize;
}
.btn__danger {
    color: #fff;
    background-color: #ca3c3c;
    border-color: #bd2130;
}
.btn__filter {
    border-color: lightgrey;
}
.btn__danger:focus {
    outline-color: #c82333;
}
.btn__primary {
    color: #fff;
    background-color: #000;
}
.btn-group {
    display: flex;
    justify-content: space-between;
}
.btn-group > * {
    flex: 1 1 auto;
}
.btn-group > * + * {
    margin-left: 0.8rem;
}