html {
    font-size: 12px;
}

@media (min-width: 768px) {
    html {
        font-size: 14px;
    }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
 
}

body {
  margin-bottom: 60px;
}
embed {
    position: relative;
    top: -51px;
    width: 100%;
    height: 100vh
}
#my_pdf_viewer {
    position: relative;
}

#canvas_container {
    position: relative;
    width: 100%;
    height: 90vh;
    overflow: auto;
    background: #333;
    text-align: center;
    border: solid 3px;
}

#navigation_controls {
    position: absolute;
    bottom: 10px;
    right: 20px;
}

    #navigation_controls button,
    #navigation_controls input {
        margin: 5px;
    }
.loader {    
    position: absolute;
    top: 40%;
    left: 40%;    
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}