.btn.btn-stop {
    background-color: #fff;
    border: 1px solid #25386f;
    color: #25386f;
    width: 20%;
    font-size: 0.9rem;
    min-height: 30px;
    font-weight: 500;
}

.btn {
    background-color: #25386f;
    border: 1 px solid #25386f;
    color: #fff;
    min-height: 40px;
    width: 30%;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    padding: .375rem .75rem;
    margin-bottom: .25rem;
    margin-top: .25rem;
}
.text-center{
    text-align: center;
}

.highcharts-figure {
  width: 100%;
  height: 100%;
  margin: 0;
}

#outer {
    min-width: 360px;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

#overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    z-index: 999;
    background-color: rgba(255, 255, 255, 0.75);
}

#stop {
    visibility: hidden;
}

@media (max-width: 575px){
    .btn.btn-play {
        width: 50%;
    }
    .btn.btn-stop {
        width: 30%;
    }
  
}