diff --git a/src/html/elements.rs b/src/html/elements.rs
index 2de304c..570b61c 100644
--- a/src/html/elements.rs
+++ b/src/html/elements.rs
@@ -12,8 +12,11 @@ impl Render for h1 {
 }
 
 impl h1 {
-    pub(crate) fn new(text: String) -> Self {
-        Self { text }
+    pub(crate) fn new<T>(text: T) -> Self
+    where
+        T: Into<String>,
+    {
+        Self { text: text.into() }
     }
 }
 
@@ -29,15 +32,18 @@ impl Render for h2 {
 }
 
 impl h2 {
-    pub(crate) fn new(text: String) -> Self {
-        Self { text }
+    pub(crate) fn new<T>(text: T) -> Self
+    where
+        T: Into<String>,
+    {
+        Self { text: text.into() }
     }
 }
 
 #[allow(non_camel_case_types)]
 pub(crate) struct link {
-    rel: &'static str,
-    href: &'static str,
+    rel: String,
+    href: String,
 }
 
 impl Render for link {
@@ -47,15 +53,22 @@ impl Render for link {
 }
 
 impl link {
-    pub(crate) fn new(rel: &'static str, href: &'static str) -> Self {
-        Self { rel, href }
+    pub(crate) fn new<T, U>(rel: T, href: U) -> Self
+    where
+        T: Into<String>,
+        U: Into<String>,
+    {
+        Self {
+            rel: rel.into(),
+            href: href.into(),
+        }
     }
 }
 
 #[allow(non_camel_case_types)]
 pub(crate) struct div {
-    id: &'static str,
-    classes: Vec<&'static str>,
+    id: String,
+    classes: Vec<String>,
     content: Vec<Box<dyn Render>>,
 }
 
@@ -72,10 +85,14 @@ impl Render for div {
 }
 
 impl div {
-    pub(crate) fn new(id: &'static str, classes: Vec<&'static str>) -> Self {
+    pub(crate) fn new<T, U>(id: T, classes: Vec<U>) -> Self
+    where
+        T: Into<String>,
+        U: Into<String> + Clone,
+    {
         Self {
-            id,
-            classes,
+            id: id.into(),
+            classes: classes.iter().map(|x| x.clone().into()).collect(),
             content: vec![],
         }
     }
@@ -87,65 +104,99 @@ impl div {
 
 #[allow(non_camel_case_types)]
 pub(crate) struct p {
-    id: &'static str,
-    classes: Vec<&'static str>,
-    text: String
+    id: String,
+    classes: Vec<String>,
+    text: String,
 }
 
 impl Render for p {
     fn render(&self) -> String {
         let classes = self.classes.join(" ");
-        format!("<p id=\"{}\" class=\"{}\">{}</p>", self.id, classes, self.text)
+        format!(
+            "<p id=\"{}\" class=\"{}\">{}</p>",
+            self.id, classes, self.text
+        )
     }
 }
 
 impl p {
-    pub(crate) fn new(id: &'static str, classes: Vec<&'static str>, text: String) -> Self {
+    pub(crate) fn new<T, U, V>(id: T, classes: Vec<U>, text: V) -> Self
+    where
+        T: Into<String>,
+        U: Into<String> + Clone,
+        V: Into<String>,
+    {
         Self {
-            id,
-            classes,
-            text
+            id: id.into(),
+            classes: classes.iter().map(|x| x.clone().into()).collect(),
+            text: text.into(),
         }
     }
 }
 
 #[allow(non_camel_case_types)]
 pub(crate) struct img {
-    id: &'static str,
-    classes: Vec<&'static str>,
-    src: &'static str,
+    id: String,
+    classes: Vec<String>,
+    src: String,
 }
 
 impl Render for img {
     fn render(&self) -> String {
         let classes = self.classes.join(" ");
-        format!("<img id=\"{}\" class=\"{}\" src=\"{}\">", self.id, classes, self.src)
+        format!(
+            "<img id=\"{}\" class=\"{}\" src=\"{}\">",
+            self.id, classes, self.src
+        )
     }
 }
 
 impl img {
-    pub(crate) fn new(id: &'static str, classes: Vec<&'static str>, src: &'static str) -> Self {
-        Self { id, classes, src }
+    pub(crate) fn new<T, U, V>(id: T, classes: Vec<U>, src: V) -> Self
+    where
+        T: Into<String>,
+        U: Into<String> + Clone,
+        V: Into<String>,
+    {
+        Self {
+            id: id.into(),
+            classes: classes.iter().map(|x| x.clone().into()).collect(),
+            src: src.into(),
+        }
     }
 }
 
 #[allow(non_camel_case_types)]
 pub(crate) struct a {
-    id: &'static str,
-    classes: Vec<&'static str>,
-    href: &'static str,
+    id: String,
+    classes: Vec<String>,
+    href: String,
     text: String,
 }
 
 impl Render for a {
     fn render(&self) -> String {
         let classes = self.classes.join(" ");
-        format!("<a id=\"{}\" class=\"{}\" href=\"{}\">{}</a>", self.id, classes, self.href, self.text)
+        format!(
+            "<a id=\"{}\" class=\"{}\" href=\"{}\">{}</a>",
+            self.id, classes, self.href, self.text
+        )
     }
 }
 
 impl a {
-    pub(crate) fn new(id: &'static str, classes: Vec<&'static str>, href: &'static str, text: String) -> Self {
-        Self { id, classes, href, text }
+    pub(crate) fn new<T, U, V, W>(id: T, classes: Vec<U>, href: V, text: W) -> Self
+    where
+        T: Into<String>,
+        U: Into<String> + Clone,
+        V: Into<String>,
+        W: Into<String>,
+    {
+        Self {
+            id: id.into(),
+            classes: classes.iter().map(|x| x.clone().into()).collect(),
+            href: href.into(),
+            text: text.into(),
+        }
     }
-}
\ No newline at end of file
+}
diff --git a/src/html/mod.rs b/src/html/mod.rs
index 1c8a963..242037d 100644
--- a/src/html/mod.rs
+++ b/src/html/mod.rs
@@ -5,7 +5,7 @@ pub(crate) trait Render {
 }
 
 pub(crate) struct Page {
-    title: &'static str,
+    title: String,
     head: Vec<Box<dyn Render>>,
     body: Vec<Box<dyn Render>>,
 }
@@ -45,9 +45,12 @@ impl Render for Page {
 }
 
 impl Page {
-    pub(crate) fn new(title: &'static str) -> Self {
+    pub(crate) fn new<T>(title: T) -> Self
+    where
+        T: Into<String>,
+    {
         Page {
-            title,
+            title: title.into(),
             head: vec![],
             body: vec![],
         }
diff --git a/src/middleware/mod.rs b/src/middleware/mod.rs
index bf0aac1..bf084ad 100644
--- a/src/middleware/mod.rs
+++ b/src/middleware/mod.rs
@@ -1,24 +1,27 @@
-use std::future::{ready, Ready};
-use actix_web::dev::{forward_ready, Service, ServiceRequest, ServiceResponse, Transform};
 use actix_web::Error;
-use actix_web::http::header::{HeaderValue, CONTENT_TYPE};
+use actix_web::dev::{Service, ServiceRequest, ServiceResponse, Transform, forward_ready};
+use actix_web::http::header::{CONTENT_TYPE, HeaderValue};
 use futures_util::future::LocalBoxFuture;
+use std::future::{Ready, ready};
 
 pub(crate) struct MimeType {
     mime_type: String,
 }
 
 impl MimeType {
-    pub(crate) fn new(mime_type: String) -> Self {
+    pub(crate) fn new<T>(mime_type: T) -> Self
+    where
+        T: Into<String>,
+    {
         Self {
-            mime_type
+            mime_type: mime_type.into(),
         }
     }
 }
 
-impl<S,B> Transform<S, ServiceRequest> for MimeType
+impl<S, B> Transform<S, ServiceRequest> for MimeType
 where
-    S: Service<ServiceRequest, Response=ServiceResponse<B>, Error=Error>,
+    S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
     S::Future: 'static,
     B: 'static,
 {
@@ -30,7 +33,7 @@ where
 
     fn new_transform(&self, service: S) -> Self::Future {
         let mime_type = self.mime_type.clone();
-        ready(Ok(MimeTypeMiddleware{service, mime_type}))
+        ready(Ok(MimeTypeMiddleware { service, mime_type }))
     }
 }
 
@@ -39,7 +42,7 @@ pub(crate) struct MimeTypeMiddleware<S> {
     mime_type: String,
 }
 
-impl<S,B> Service<ServiceRequest> for MimeTypeMiddleware<S>
+impl<S, B> Service<ServiceRequest> for MimeTypeMiddleware<S>
 where
     S: Service<ServiceRequest, Response = ServiceResponse<B>, Error = Error>,
     S::Future: 'static,
@@ -53,11 +56,11 @@ where
 
     fn call(&self, req: ServiceRequest) -> Self::Future {
         let fut = self.service.call(req);
-        let val = HeaderValue::from_str(self.mime_type.as_str()).unwrap_or_else(|_| HeaderValue::from_static("text/html"));
+        let val = HeaderValue::from_str(self.mime_type.as_str()).expect("Invalid MimeType");
         Box::pin(async move {
             let mut res = fut.await?;
             res.headers_mut().append(CONTENT_TYPE, val);
             Ok(res)
         })
     }
-}
\ No newline at end of file
+}