style.css

textarea {
    line-height: 1.5em;
    min-width: 265px;
    height: 100%;
}

textarea::placeholder {
    background-image: url(./img/np-logo.svg);
    background-repeat: no-repeat;
    height: 100%;
    background-position: bottom;
}

button {
    min-width: 130px;
}

button:active {
    transform: translateY(1px);
}

button:disabled {
    background: #aaa;
    border: 1px solid #aaa;
}

button:disabled:hover {
    background: #aaa;
    border: 1px solid #aaa;
}

button:disabled:after {
    content: " ...";
    animation: hightlight 1.3s infinite linear;
}

@keyframes hightlight {
    50% {
        opacity: .2;
    }

    100% {
        opacity: 1;
    }
}

.main-content {
    position: relative;
    display: flex;
    justify-content: space-between;
}

.result {
    margin: 0 10px;
    background: rgba(223, 223, 223, 0.479);
    flex: 1 1 200px;
    border-radius: 4px;
    padding: 0.75rem;
    line-height: 1.5em;
}


.contacts-links {
    text-align: center;
    font-size: 0;
    margin-top: 80px;

}

.contacts-links svg {
    margin: 0 5px;
}

.contacts-links svg:hover {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
}