mainHub.css

/*Menu Flutuante*/
*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

body{
    background-color: rgb(27, 27, 27);
}

footer {
    text-align: center;
    padding: 30px;
    background: #333;
    color: #fff;
    position: fixed;
    width: 100%;
    bottom: 0;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
    font-size: large;
    list-style: none;
}
  
li {
    float: right;
    display: flex;
    margin-right: 60px; 
}
  
li a, .dropbtn {
    display: inline-block;
    color: rgb(201, 201, 201);
    text-align: center;
    padding: 32px 34px;
    text-decoration: none;
}
  
li a:hover, .dropdown:hover .dropbtn {
    background-color: #36dd81;
    color: #ffffff;
    transition: 0.45s;
}

li.dropdown {
    display: inline-block;
}
  
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #ffffff;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}
  
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}
  
.dropdown-content a:hover {background-color: #36dd81;}
  
.dropdown:hover .dropdown-content {
    display: block;
}

/* Textasso */
#textoAvisando{
    color: #ffffff;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    font-size: 18px;
}
#caixaTexto{
    background-color: #2c2c2c;
    margin-top: 5%;
    margin-right: 35%;
    margin-left: 10%;
    line-break: auto;
    text-align: center;
    border: 5px solid;
    border-color: #36dd81;
    border-radius: 35px;
    padding: 45px;
    
}

/* Imagens */