course.css

@font-face {
    font-family: "Outfit";
    src: url("https://fonts.google.com/specimen/Outfit");
    /* Weights: 300, 400, 600 */
}

:root {
    /* Width layout */
    --width-mobile: 375px;
    --desktop: 1440px;

    /* Colors */
    --primary-Soft-blue: hsl(215, 51%, 70%);
    --primary-Cyan: hsl(178, 100%, 50%);

    --main-Very-dark-blue: hsl(217, 54%, 11%);
    --card-Very-dark-blue: hsl(216, 50%, 16%);
    --line-Very-dark-blue: hsl(215, 32%, 27%);
    --neutral-White: hsl(0, 0%, 100%);

    /* Font */
    --Font-paragraph-size: 18px;
}

/* * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: white;
} */

body {
    background-color: var(--main-Very-dark-blue);
    font-family: "Outfit", Arial, Helvetica, sans-serif;
    line-height: 1.6;
}

@import url("https://pro.fontawesome.com/releases/v6.0.0-beta1/css/all.css");

.ol-cards,
.ol-cards * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.ol-cards {
  --flapWidth: 2rem;
  --flapHeigth: 1rem;
  --iconSize: 3rem;
  --numberSize: 3rem;
  --colGapSize: 2rem;
  width: min(100%, 40rem);
  margin-inline: auto;
  display: grid;
  gap: 2rem;
  padding-inline-start: var(--flapWidth);
  font-family: sans-serif;
  color: #222;
  counter-reset: ol-cards-count;
  list-style: none;
}
.ol-cards > li > a{
  display: grid;
  grid-template-areas:
    "icon title nr"
    "icon descr nr";
  gap: 0 var(--colGapSize);
  align-items: center;
  padding: var(--colGapSize) var(--flapWidth) var(--colGapSize) 0;
  border-radius: 1rem 5rem 5rem 1rem;
  background-image: linear-gradient(to bottom right, #e9eaec, #ffffff);
  counter-increment: ol-cards-count;
  filter: drop-shadow(10px 10px 10px rgba(0, 0, 0, 0.25));
  box-shadow: inset 2px 2px 2px white, inset -1px -1px 1px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: all .2s ease-in-out; 
}

.ol-cards > li :hover{
    transform: scale(1.04);
  }

.ol-cards > li > a > .icon {
  grid-area: icon;
  background: var(--accent-color);
  color: white;
  font-size: var(--iconSize);
  width: calc(2 * var(--flapWidth) + var(--iconSize));
  padding-block: 1rem;
  border-radius: 0 5rem 5rem 0;
  margin-inline-start: calc(-1 * var(--flapWidth));
  box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.25);
  position: relative;
  display: grid;
  place-items: center;
}
.ol-cards > li > a > .icon::before {
  content: "";
  position: absolute;
  width: var(--flapWidth);

  height: calc(100% + calc(var(--flapHeigth) * 2));
  left: 0;
  top: calc(var(--flapHeigth) * -1);
  clip-path: polygon(
    0 var(--flapHeigth),
    100% 0,
    100% 100%,
    0 calc(100% - var(--flapHeigth))
  );
  background-color: var(--accent-color);
  background-image: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.5),
    rgba(0, 0, 0, 0.2)
  );
  z-index: -1;
}

.ol-cards > li > a > .title {
  grid-area: title;
  font-weight: 600;
  font-size: 1.25rem;
  color: #222;
}
.ol-cards > li > a > div > .descr {
  grid-area: descr;
  color: #222;
  text-transform: none;
  font-size: 16px;
}
.ol-cards > li > a::after {
  grid-area: nr;
  content: counter(ol-cards-count, decimal-leading-zero);
  color: var(--accent-color);
  font-size: var(--numberSize);
  font-weight: 700;
}
@media (max-width: 40rem) {
  .ol-cards {
    --flapWidth: 1rem;
    --flapHeigth: 0.5rem;
    --iconSize: 2rem;
    --numberSize: 2rem;
    --colGapSize: 1rem;
  }
}
/* for demo */
/* body {
  background-color: #c6c9ce;
  padding: 2rem;
} */
/* h1 {
  text-transform: uppercase;
  font-family: sans-serif;
  text-align: center;
  color: #222;
} */

.card-container {
    width: 60%;
}

.image-main {
    width: 100%;
    height: 250px;
}


/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 10; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
  }
  
  /* Modal Content/Box */
  .modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
  }
  
  /* The Close Button */
  .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
  }
  
  .close:hover,
  .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
  }

  .previous {
    color: white;
     font-size: 20px;
     text-transform: none;
  }