.btn-app {
    width: 3.5em;
    height: 3.5em;
    border-radius: 50%;
    position: fixed;
    background-color: #cccccc;
    color: #000;
    text-align: center;
    cursor: pointer;
}

.btn-app .text {
    position: fixed;
    bottom: 1.5em;
    right: 3em;
    background: #cccccc;
    padding: 1em 2em 1em 1em;
    border-radius: 2em 0 0 2em;
    z-index: 1;
}

.btn-app .position-absolute{ 
    z-index: 5;
    width: 100%;
}
.btn-app .fa {
    line-height: 2em;
    font-size: 2em;
    color: #000;
}

.open .btn-app {
    box-shadow: 4px 4px 2px 1px rgba(0, 0, 0, 0.2);
}

.menu-line {
    position: fixed;
    z-index: 2;
}

.menu-line .btn-app {
    bottom: 1.5em;
    right: 1.5em;
    transition: 0.3s;
    transition-delay: 0.5s;
}

.menu-line.open .btn-app:nth-of-type(1) {
    bottom: 5em;
}