hr {
    height: 0.5px;
    background-color: rgba(0,0,0,0.4);
    position: relative;
    top: 40px;
}

.txt1 {
    position: relative;
    z-index: 1;
    bottom: 30px;
    left: 40%;
    font-size: 20px;
    color: rgba(0,0,0,0.6);
    background-color: white;
    width: 200px;
    text-align: center;
    top: 5px;
}

* {
    box-sizing: border-box;
}

input[type=text], select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: vertical;
}

label {
    padding: 12px 12px 12px 0;
    display: inline-block;
}

input[type=submit] {
    background-color: #4CAF50;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    float: right;
}

    input[type=submit]:hover {
        background-color: #45a049;
    }

.containerr {
    border-radius: 5px;
    padding: 20px;
    margin-left:30%;
}

.col-25 {
    float: left;
    width: 25%;
    margin-top: 6px;
}

.col-75 {
    float: left;
    width: 75%;
    margin-top: 6px;
}

.row:after {
    content: "";
    display: table;
    clear: both;
}
.gonder {
    width: 150px;
    height:35px;
    background-color:white;
    color:black;
    font-size:16px;
    border:solid 1px rgba(0,0,0,0.6);
    text-align:center;
    border-radius:4px;
    margin-left:15%;
}
    .gonder:hover {
        transition: ease-in-out all 0.4s;
        background-color: darkslategray;
        color:white;
    }

@media screen and (max-width: 600px) {
    .col-25, .col-75, input[type=submit] {
        width: 100%;
        margin-top: 0;
    }
}

@media screen and (max-width:420px) {
    .txt1 {
        left: 20%;
    }

    .containerr {
        float: left;
        margin-left:5%;
    }
}