.main-img {
    height: 728px;
    width: 497px;
    position: relative;
    background: url('../assets/mapa-portugal.svg') no-repeat center;
    
    }
    .invisible-area {
    position: absolute;
    height: 100px;
    width: 100px;
    }
    .porto{
        top: 120px;
        left: 200px;
    }
    .lisboa {
    top: 425px;
    left: 110px; 
    }

    .aveiro{
    top: 190px;
    left: 190px;
    }

    .setubal{
    top: 495px;
    left: 180px;
    }

    .tooltipmap {
    font-size: 14px;
    padding: 5px;
    display: none;
    background: #bcd35ff4;
    border-radius: 5px;
    border: 1px #bcd35ff4 solid;
    }
    
    .invisible-area:hover .tooltipmap {
    display: block;
    }