.custom-button {
    position: relative;
    display: inline-block;
    font-size: 15px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #ffffff;
    background-color: #000000;
    border: 1px solid #000000;
    transition: .3s all ease;
    line-height: 49px;
    padding: 0 30px;
}

.custom-button:hover,
.custom-button:active,
.custom-button:focus {
    color: #000000;
    background-color: transparent;
}

.progetti .custom-button:hover,
.progetti .custom-button:active,
.progetti .custom-button:focus {
    background-color: #000000;
}

.custom-button-container.centro {
    text-align: center;
}

.custom-button-container.destra {
    text-align: right;
}

.custom-button-container.sinistra {
    text-align: left;
}

@media all and (max-width: 767px) {
    .custom-button {
        font-size: 14px;
        min-height: 40px;
        padding: 12px 20px;
        line-height: normal;
        text-align: center;
    }
}