.form-inline {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
}

.form-inline input {
    border: none;
    width: 250px;
    font-size: 20px;
    text-align: center;
    border-bottom: 1px dotted;
    background: none;
    vertical-align: middle !important;
    margin: 5px 100px 5px 0 !important;
    padding: 10px !important;
}

.form-inline input:focus {
    background: none;
    border: none;
    outline: 0;
    box-shadow: none;
}

.form-inline button {
    padding: 10px 20px;
    background-color: dodgerblue;
    border: 1px solid #ddd;
    color: white;
}