delete css files

src/styles/profile/UpdateProfileForm.css

-.updateProfileFormContainer {
-    margin: 36px 72px!important;
-}
-
-label {
-    font-family: "DM Sans";
-    font-size: 18px;
-    color: #000000;
-    font-weight: bold;
-    margin-bottom: 12px;
-}
-
-.username {
-    min-width: 1120px;
-    max-width: 1296px;
-    font-family: "DM Sans";
-    height: 45px;
-    padding: 12px 16px;
-    border-radius: 8px;
-    border: 0;
-    box-shadow: 0px 0px 8px 1px rgba(0,0,0,0.25);
-    margin-bottom: 32px;
-}
-
-.buttonSubmit {
-    border-radius: 4px;
-    border-width: 0px;
-    padding: 8px;
-    font-family: "DM Sans";
-    color: #ffffff;
-    border-style: none;
-    background-color: #DE6600;
-    border-color: #DE6600;
-}
-
-textarea:focus, input:focus, select:focus{
-    outline: none;
-}
-
-@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
-
-    label {
-        font-size: 14px;
-        margin-bottom: 12px;
-    }
-}
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src/styles/thread/EditThread.css

-.editThreadContainer {
-    margin: 36px 72px!important;
-}
-
-.back {
-    margin-top: 32px;
-    color: #007A7A;
-}
-
-.back:hover {
-    cursor: pointer;
-}
-
-.header {
-    margin-top: 36px;
-}
-
-.header h1 {
-    font-family: "DM Sans";
-    font-size: 2.25rem;
-    color: #003F5A;
-}
-
-label {
-    font-family: "DM Sans";
-    font-size: 18px;
-    color: #000000;
-    font-weight: bold;
-    margin-bottom: 12px;
-}
-
-.buttonSubmit {
-    border-radius: 4px;
-    border-width: 0px;
-    padding: 8px;
-    font-family: "DM Sans";
-    color: #ffffff;
-    border-style: none;
-    background-color: #DE6600;
-    border-color: #DE6600;
-}
-
-textarea:focus, input:focus, select:focus{
-    outline: none;
-}
-
-@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {
-    .header h1 {
-        font-size: 28px;
-    }
-}   
\ No newline at end of file

src/styles/topic/CreateTopicForm.css

-.createTopicFormContainer {
-    margin: 36px 72px!important;
-}
-
-
-.buttonSubmit {
-    border-radius: 4px;
-    border-width: 0px;
-    padding: 8px;
-    font-family: "DM Sans";
-    color: #ffffff;
-    border-style: none;
-    background-color: #DE6600;
-    border-color: #DE6600;
-}
-
-textarea:focus, input:focus, select:focus{
-    outline: none;
-}