* {
    box-sizing: border-box;
}

.all {
    width: 50%;
    margin: 0 auto;
}

.ipt {
    padding: 3px;
}

.btn {
    background-color: blue;
    font-size: 18px;
    color: white;
    border: 1px solid blue;
    box-shadow: 2px -1px 3px rgb(0, 38, 255);
    border-radius: 3px;
    cursor: pointer;
}

.aaa {
    width: 80%;
    padding: 10px 0;
}

.xxx {
    padding-bottom: 10px;
}

.reset {
    background: linear-gradient(#e63f00, #c0f);
    border: 0px;
    box-shadow: 2px -1px 3px black;
    border-radius: 3px;
    font-size: 20px;
    color: white;
    text-shadow: 0px 0px 3px white;
    cursor: pointer;
    display: none;
}