.tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted black
}
.tooltip .tooltiptext {
  visibility: hidden;
  width: 200px;
  background-color: black;
  color: white;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 100%;
  left: 50%;
  margin-left: -60px;
  opacity: 0;
  transition: opacity 1s;
}
.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent black transparent;
}
.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}
.siema {
  margin: 20px 0;
  overflow: hidden;
  width: 100%;
}
.siema .card {
  min-width: 100%;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  margin: 10px;
  padding: 20px;
  text-align: center;
}
.card-container {
display: flex;
flex-wrap: wrap;
justify-content: center;
flex-direction: column;
margin:auto;
width: 900px ;
}
.card-container .card {
background-color: #00478e;
color: white;
padding: 20px;
margin: 10px;
width: 900px;
border-radius: 10px;
position: relative;
justify-content: center;
/* align-items: center; */
text-align: center;
border: 2px solid #00478e;
}
.card-container .card::after {
content: "";
position: absolute;
top: 5px;
bottom: 5px;
left: 5px;
right: 5px;
border: 2px solid white;
border-radius: 8px;
pointer-events: none;
}
.card h3 {
margin-top: 0;
}
.card h4 {
margin-top: 0;
text-align: center;
}
button {
padding: 10px 20px;
margin: 5px;
background-color: #007bff;
color: white;
border: none;
cursor: pointer;
}
button:focus {
outline: none;
}
.center-text {
  text-align: center;
}