* { --grün: rgb(175,202,11);
    --anthrazit: rgb(40, 39, 39);
    --violett: rgb(80, 30, 112);
    background-color: var(--anthrazit);
    color:white;
}

html,body{
    overflow-x: hidden;
}  

h1 {
    text-align: center; 
    font-size: 3rem;
}  

p {
    text-align: center; 
} 

form {
    text-align: center;
    flex: 0 1 650px; /* 700px base width, it doesn't grow if more space available, it shrinks if less space available*/
    /*padding:20px;*/
    margin: 0px 10px 0px 10px;
    /*border: 2px solid var(--grün);*/
    border-radius: 20px;
}


label{ 
    /*border: 1px solid pink;*/
    font-size: 16px;
    
}

input {
    width: 240px;
    padding: 8px;
    margin: 25px 0px 5px 0px;
    border: none;
    border-bottom: 1px solid var(--grün);
    background-color: var(--anthrazit);
}

input[type=radio]{
    width: 30px;
    height: 16px;
    padding:0px;
    margin:0px;
}



input::placeholder{
    text-align: center;
}

textarea {
    border-radius: 20px;
    border-color: var(--grün); 
    margin:20px auto;
    padding: 15px;
    background-color: var(--anthrazit);
    width: fit-content; 
}

.submit{
    width: 150px;
    padding:15px;
    font-size: 16px;;
    color: black;
    background-color: var(--grün);
    border-radius: 20px;
}

.submit:hover {
    background-color: black;
    color: white;
}

.container {
    height: 95vh;
    display:flex;
    align-items: center;
    justify-content: center;
}

.center {
    border: 2px solid var(--grün);
    border-radius: 20px;
    padding: 25px;
}

img { 
    display: block;
    margin:auto;
    width: 40%;

}

button{
    display: block;
    margin: auto;
    width: 150px;
    padding:15px;
    font-size: 16px;;
    color: black;
    background-color: var(--grün);
    border-radius: 20px;
}

.flex{
    /*border: 1px solid red;*/
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.flex-item {
    /*border: 1px solid blue;*/
    flex: 1 1 250px;
}

.flex-column{
    border:1px solid red;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 0 1 100px;
}