.vnis *,
.vnis *::after,
.vnis *::before { box-sizing: border-box; }

.vnis__input {
    -webkit-appearance: none;
    border: 1px solid #ebebeb;
    float: left;
    font-size: 16px;
    height: 40px;
    margin: 0;
    outline: none;
    text-align: center;
    width: calc(100% - 60px);
}
.vnis__input::-webkit-outer-spin-button,
.vnis__input::-webkit-inner-spin-button { -webkit-appearance: none; }

.vnis__button {
    -webkit-appearance: none;
    transition: background 0.5s ease;
    background: var(--tertiary);
    border: 0;
    color: #fff;
    cursor: pointer;
    float: left;
    font-size: 1.4rem;
    height: 40px;
    margin: 0;
    width: 30px;
}

.vnis__button:hover {
    background: var(--tertiary);
    opacity: .75;
}

.vnis__button:focus {
    outline: 1px dashed var(--tertiary);
    outline-offset: -5px;
}

.vnis__button:disabled {
    opacity: .4;
}