* {
  box-sizing: border-box;
  font-family: arial, sans-serif;
  padding: 0;
  margin: 0;
}

body {
  display: flex;
  justify-content: center; /* horizontal */
  align-items: center; /* vertical */
  min-height: 100vh;
}

.todoContainer {
  background-color: rgba(215, 243, 205, 0.468);
  width: 500px;
  padding: 20px;
  text-align: center;
  border: 1px solid black;
  box-shadow: 0px 0px 10px 0px #181818;
  border-radius: 10px;
}

h1 {
  margin: 0 auto 10px;
  padding: 0;
}

ul {
  list-style: none;
  padding: 10px 0 0 0px;
  margin: 0 12px 0 15px;
}

li {
  justify-content: space-between;
  display: flex;
  align-items: center;
  padding: 8px 0 0 0;
  border-bottom: px solid whitesmoke;
}

li:last-child {
  border-bottom: none;
}
.deleteBtn {
  cursor: pointer;
  border: none;
  border-radius: 5px;
  min-height: 30px;
  min-width: 70px;
  background: white;
  margin-right: 2px;
}

.deleteBtn:hover {
  cursor: pointer;
  border-radius: 5px;
  background: rgb(222, 94, 94);
  color: rgba(254, 255, 255, 0.946);
  box-shadow: 0px 0px 10px 0px #e65130;
  border: none;
}

#Ipt {
  background-color: white;
  border: none;
  border-radius: 4px;
  min-width: 350px;
  min-height: 35px;
  padding-left: 10px;
  box-shadow: 0px 0px 5px 0px #383838;
}

#Ipt:focus {
  outline: none; /* supprime l'outline par défaut */

  /* et tu mets ce que tu veux à la place */
  border: 2px solid white;
  box-shadow: 0px 0px 5px 0px #ffffff;
}

#btn {
  border-radius: 5px;
  cursor: pointer;
  min-width: 70px;
  min-height: 35px;
  background: rgb(108, 168, 207);
  color: rgba(254, 255, 255, 0.946);
  border: 2px solid rgb(108, 168, 207);
  margin-left: 5px;
}
#btn:hover {
  background: rgb(140, 227, 90);
  box-shadow: 0px 0px 10px 2px #ffffff;
  border: none;
}