button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    max-width: calc(100% - 10px - 10px);
    min-height: 40px;
    margin: 0;
    padding: 7.5px 15px;
    border: none;
    border-radius: 5px;
    background: #03a9f4;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.25s ease
}

button:hover {
    background: #9e9e9e
}