html {
    /*max-width: 1000px;*/
    margin: auto;
    /*min-width: 800px;*/
}
/* Tooltip container */
.tooltip {
    position: relative;
    display: inline-block;
    /*border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
}

/* Tooltip text */
.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    bottom: 100%;
    left: 50%; 
    margin-left: -100px; /* Use half of the width (120/2 = 60), to center the tooltip */
    background-color: dodgerblue;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    border-radius: 6px;
 
    /* Position the tooltip text - see examples below! */
    position: absolute;
    z-index: 1;
}

/* Show the tooltip text when you mouse over the tooltip container */
.tooltip:hover .tooltiptext {
    visibility: visible;
}
/*.tooltip .tooltiptext {
    width: 200px;
    bottom: 100%;
    left: 50%; 
    margin-left: -60px; /* Use half of the width (120/2 = 60), to center the tooltip }*/