body {
    background:url('../images/snow.gif') repeat 100% 100% fixed  #B3000C;
    height:100%;
    width:100%;
    font-family: arial;
    font-size: 16px;
    color: black;
}
form {
    width: 1050px;
    padding: 0 20px;
    margin: auto;
}
.word {
    display: flex;
}
.word label {
    width: 400px;
    height: 30px;
    background-color: rgba(255,255,255,0.7);
    border: 1px solid black;
    box-sizing: border-box;
    line-height: 30px;
    padding: 0px 5px;
    margin-right: 10px;
}
.word-13 label, .word-14 label {
    background-color: transparent;
    border: none;
}
.letter {
    width: 30px;
    height: 30px;
}
.letter input {
    width: 30px;
    height: 30px;
    padding: 0;
    box-sizing: border-box;
    text-align: center;
    text-transform: uppercase;
    border: 1px solid black;
}
.letter-12 input {
    background-color: lightgray;
    border: 2px solid yellow;
}

.word-15 input {
    background-color: lightgray;
    border: 1px solid black !important;
}

.check-button {
    margin-top: 20px;
    border-radius: 5px;
    border: none;
    padding: 10px;
    background-color: white;
    text-transform: uppercase;
    font-weight: 700;
    cursor: pointer;
    width: max-content;
}

.correct {
    background-color: green !important;
    font-weight: 700;
}

.wrong {
    background-color: red !important;
    font-weight: 700;
    color: white
}

.success {
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-color: rgba(0, 0, 0, 0.4);
}

.wrapper {
    height: 100%;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}