html {
  scroll-behavior: smooth;
}


body {
      position: relative; 
  }
  .affix {
      top:0;
      width: 100%;
      z-index: 9999 !important;
  }
  .navbar {
      margin-bottom: 0px;
  }

  .affix ~ .container-fluid {
     position: relative;
     top: 50px;
  }
  #section1 {padding-top:50px;height:auto;color: #fff; background-color: #1E88E5;}
  
  
#section2 {padding-top:50px;height:auto;color: #fff; background-color: #673ab7;}

 /* The flip card container - set the width and height to whatever you want. We have added the border property to demonstrate that the flip itself goes out of the box on hover (remove perspective if you don't want the 3D effect */
.flip-card {
 background-color: transparent;
  width: 300px;
  height: auto;
  /* border: 1px solid #f1f1f1; */
  perspective: 1000px; /* Remove this if you don't want the 3D effect */
}

/* This container is needed to position the front and back side */
.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

/* Do an horizontal flip when you move the mouse over the flip box container */
.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

/* Position the front and back side */
.flip-card-front, .flip-card-back {
  /* position: absolute; */
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

/* Style the front side (fallback if image is missing) */
.flip-card-front {
  background-color: transparent;
  color: black;
}

/* Style the back side */
.flip-card-back {
  background-color: dodgerblue;
  color: white;
  transform: rotateY(180deg);
} 
  /* Three columns side by side */
.column1 {
    float: left;
    width: 30%;
    margin-bottom: 16px;
	margin-left: 30px;
    padding: 0 8px;
}

/* Display the columns below each other instead of side by side on small screens */
@media screen and (max-width: 650px) {
    .column1 {
        width: 100%;
        display: block;
    }
}
  
  
  
  
  #section3 {padding-top:50px;height:500px;color: #fff; background-color: #ff9800;}
  #section41 {padding-top:50px;height:500px;color: #fff; background-color: #00bcd4;}
  #section42 {padding-top:50px;height:500px;color: #fff; background-color: #009688;}


* {box-sizing: border-box}
button {
    border: none;
    outline: 0;
    display: inline-block;
    padding: 8px;
    color: white;
    background-color: #000;
    text-align: center;
    cursor: pointer;
    width: 100%;
    font-size: 18px;
}

a {
    text-decoration: none;
    font-size: 22px;
    color: black;
}

button:hover, a:hover {
    opacity: 0.7;
}





/* Container needed to position the overlay. Adjust the width as needed */
.container {
  position: relative;
  width: 50%;
  max-width: 300px;
}
/* Three columns side by side */
.column {
    float: left;
    width: 33.3%;
    margin-bottom: 16px;
    padding: 0 8px;
}

/* Display the columns below each other instead of side by side on small screens */
@media screen and (max-width: 650px) {
    .column {
        width: 100%;
        display: block;
    }
}
/* Make the image to responsive */
.image {
  display: block;
  width: 100%;
  height: auto;
}

/* The overlay effect - lays on top of the container and over the image */
.overlay-card {
  position: absolute;
  bottom: 0;
  background: rgb(0, 0, 0);
  background: rgba(0, 0, 0, 0.5); /* Black see-through */
  color: #f1f1f1;
  width: 100%;
  transition: .5s ease;
  opacity:0;
  color: white;
  font-size: 20px;
  padding: 20px;
  text-align: center;
}

/* When you mouse over the container, fade in the overlay title */
.container:hover .overlay-card {
  opacity: 1;
}


.title {
    color: grey;
    font-size: 18px;
}
.card {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
    max-width: 300px;
    margin: auto;
    text-align: center;
}








 /* Tooltip */
.test + .tooltip > .tooltip-inner {
    background-color: #73AD21;
    color: #FFFFFF;
    border: 1px solid green;
    padding: 15px;
    font-size: 20px;
}

/* Tooltip on top */
.test + .tooltip.top > .tooltip-arrow {
    border-top: 5px solid green;
}

/* Tooltip on bottom */
.test + .tooltip.bottom > .tooltip-arrow {
    border-bottom: 5px solid blue;
}

/* Tooltip on left */
.test + .tooltip.left > .tooltip-arrow {
    border-left: 5px solid red;
}

/* Tooltip on right */
.test + .tooltip.right > .tooltip-arrow {
    border-right: 5px solid black;
}