.required-color{
    color: red;
}

.input-container {
    display: -ms-flexbox; /* IE10 */
    display: flex;
    width: 100%;
    margin-bottom: 15px;
}

.icon {
    padding: 10px;
    background: grey;
    color: white;
    min-width: 50px;
    text-align: center;
}

.input-field {
    width: 100%;
    padding: 10px;
    outline: none;
}

.input-field:focus {
    border: 2px solid dodgerblue;
}