.header-logo {
    width: 450px;
}

.mat-icon {
vertical-align: top;
display: inline-block;
stroke-width: 0;
stroke: red;
fill: red;
}

@media all and (max-width: 450px) {
    .header-logo {
        width: 100%;
        height: auto;
    }
}

.tooltip {
    position: relative;
    display: inline-block;
  }
  
  .tooltip .tooltiptext {
    visibility: hidden;
    width: 300px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 150%;
    left: 50%;
    margin-left: -150px;
    opacity: 0;
    transition: opacity 0.3s;
  }
  
  .tooltip .tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #555 transparent transparent transparent;
  }
  
  .tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
  }